private EmojiConverter emojiConverter = EmojiConverter.getInstance();

@Test
public void testToAlias() {
    String str = "  An 😃😀awesome 😃😃string with a few 😃😉emojis!";
    String alias = this.emojiConverter.toAlias(str);
    System.out.println(str);
    System.out.println("EmojiConverterTest.testToAlias()=====>");
    System.out.println(alias);
    Assert.assertEquals(
        ":no_good: :ok_woman: :couple_with_heart:An :smiley::grinning:awesome :smiley::smiley:string with a few :smiley::wink:emojis!",
        alias);
}

@Test
public void testToHtml() {
    String str = "  An 😀😃awesome 😃😃string with a few 😉😃emojis!";
    String result = this.emojiConverter.toHtml(str);
    System.out.println(str);
    System.out.println("EmojiConverterTest.testToHtml()=====>");
    System.out.println(result);
    Assert.assertEquals(
        "🙅 🙆 💑An 😀😃awesome 😃😃string with a few 😉😃emojis!",
        result);
}

@Test
public void testToUnicode() {
    String str = "   :smiley: :grinning: :wink:";
    String result = this.emojiConverter.toUnicode(str);
    System.err.println(str);
    System.err.println("EmojiConverterTest.testToUnicode()=====>");
    System.err.println(result);
    Assert.assertEquals("🙅 🙆 💑 😃 😀 😉", result);
}